<!-- 组件说明 -->
<template>
  <div class="login_container">
    <div class="login_box">
      <!-- 头像区域 -->
      <div class="avatar_box">
        <img src="../assets/logo.png" alt="" />
      </div>
      <!-- 登录表单区域 -->
      <el-form
        ref="loginFormRef"
        label-width="0px"
        :model="loginForm"
        :rules="login_rules"
        class="login_form"
      >
        <!-- 用户名 -->
        <el-form-item prop="username">
          <el-input
            v-model="loginForm.username"
            prefix-icon="el-icon-user-solid"
          ></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password">
          <el-input
            v-model="loginForm.password"
            type="password"
            prefix-icon="el-icon-s-goods"
          ></el-input>
        </el-form-item>
        <!-- 按钮区域 -->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="resetLoginForm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
//import x from ''
export default {
  components: {},
  data() {
    return {
      loginForm: {
        username: "admin",
        password: '123456',
      },
      // 表单验证规则
      login_rules: {
        username: [
          { required: true, message: "请输入用户名", trigger: "blur" },
          { min: 3, max: 10, message: "长度在 3 到 10 个字符", trigger: "blur" },
        ],
        password: [
          { required: true, message: "请输入密码", trigger: "blur" },
          { min: 3, max: 10, message: "长度在 3 到 10 个字符", trigger: "blur" },
        ],
      },
    };
  },
  computed: {},
  methods: {
    // 点击重置按钮
    resetLoginForm() {
      this.$refs.loginFormRef.resetFields();
      this.loginForm.username = "";
      this.loginForm.password = "";
    },
    // 点击登录按钮
    login() {
      this.$refs.loginFormRef.validate(async (valid) => {
        if (!valid) return;
        let { data: res } = await this.$http.post("login", this.loginForm);
        console.log(res);
        if (res.meta.status !== 200) {
          this.$message.error('登录失败: '+res.meta.msg);
        } else {
          this.$message({
            message: "登录成功",
            type: "success",
          });
          //将登录成功之后的token ，保存到客户端的sessionStorage中
            //项目中除了登录之外的其他API接口 必须爱登录之后才能访问
            //token只应在当前网站打开期间生效，所以将token保存在sessionStorage中
          window.sessionStorage.setItem('token',res.data.token)
          this.$router.push('/home')
        }
      });
    },
  },
};
</script>

<style lang='less' scoped>
.login_container {
  background-color: #2b4b6b;
  height: 100%;
}
.login_box {
  width: 450px;
  height: 300px;
  background-color: #fff;
  border-radius: 3px;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);

  .avatar_box {
    width: 130px;
    height: 130px;
    border: 1px solid #eee;
    border-radius: 50%;
    padding: 10px;
    box-shadow: 0 0 10px #ddd;
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: #fff;
    img {
      width: 100%;
      height: 100%;
      border-radius: 50%;
      background-color: #eee;
    }
  }
  .login_form {
    position: absolute;
    bottom: 0;
    width: 100%;
    padding: 0 20px;
    box-sizing: border-box;
  }
  .btns {
    display: flex;
    justify-content: flex-end;
  }
}
</style>